///////////////////////////////////////////////////////////////////
// Render water that is part of the terrain
void TerrainRenderer::RenderWater()
{
WaterManager* WaterMgr = g_Renderer.GetWaterManager();
if (!WaterMgr->WillRenderFancyWater() || !RenderFancyWater())
RenderSimpleWater();
}
///////////////////////////////////////////////////////////////////
// Render water that is part of the terrain
void TerrainRenderer::RenderWater(const CShaderDefines& context, ShadowMap* shadow)
{
WaterManager* WaterMgr = g_Renderer.GetWaterManager();
if (!WaterMgr->WillRenderFancyWater())
RenderSimpleWater();
else
RenderFancyWater(context, shadow);
}
void SetSettings(const sEnvironmentSettings& s)
{
CmpPtr<ICmpWaterManager> cmpWaterManager(*g_Game->GetSimulation2(), SYSTEM_ENTITY);
ENSURE(cmpWaterManager);
cmpWaterManager->SetWaterLevel(entity_pos_t::FromFloat(s.waterheight * (65536.f * HEIGHT_SCALE)));
WaterManager* wm = g_Renderer.GetWaterManager();
wm->m_Waviness = s.waterwaviness;
wm->m_Murkiness = s.watermurkiness;
wm->m_WindAngle = s.windangle;
if (wm->m_WaterType != *s.watertype)
{
wm->m_WaterType = *s.watertype;
wm->ReloadWaterNormalTextures();
}
#define COLOR(A, B) B = CColor(A->r/255.f, A->g/255.f, A->b/255.f, 1.f)
COLOR(s.watercolor, wm->m_WaterColor);
COLOR(s.watertint, wm->m_WaterTint);
#undef COLOR
g_LightEnv.SetRotation(s.sunrotation);
g_LightEnv.SetElevation(s.sunelevation);
CStrW posteffect = *s.posteffect;
if (posteffect.length() == 0)
posteffect = L"default";
g_Renderer.GetPostprocManager().SetPostEffect(posteffect);
CStrW skySet = *s.skyset;
if (skySet.length() == 0)
skySet = L"default";
g_Renderer.GetSkyManager()->SetSkySet(skySet);
g_LightEnv.m_FogFactor = s.fogfactor;
g_LightEnv.m_FogMax = s.fogmax;
g_LightEnv.m_Brightness = s.brightness;
g_LightEnv.m_Contrast = s.contrast;
g_LightEnv.m_Saturation = s.saturation;
g_LightEnv.m_Bloom = s.bloom;
#define COLOR(A, B) B = RGBColor(A->r/255.f, A->g/255.f, A->b/255.f)
COLOR(s.suncolor, g_LightEnv.m_SunColor);
g_LightEnv.m_SunColor *= s.sunoverbrightness;
COLOR(s.terraincolor, g_LightEnv.m_TerrainAmbientColor);
COLOR(s.unitcolor, g_LightEnv.m_UnitsAmbientColor);
COLOR(s.fogcolor, g_LightEnv.m_FogColor);
#undef COLOR
cmpWaterManager->RecomputeWaterData();
}
void ShaderModelRenderer::Render(const RenderModifierPtr& modifier, const CShaderDefines& context, int cullGroup, int flags)
{
if (m->submissions[cullGroup].empty())
return;
CMatrix3D worldToCam;
g_Renderer.GetViewCamera().m_Orientation.GetInverse(worldToCam);
/*
* Rendering approach:
*
* m->submissions contains the list of CModels to render.
*
* The data we need to render a model is:
* - CShaderTechnique
* - CTexture
* - CShaderUniforms
* - CModelDef (mesh data)
* - CModel (model instance data)
*
* For efficient rendering, we need to batch the draw calls to minimise state changes.
* (Uniform and texture changes are assumed to be cheaper than binding new mesh data,
* and shader changes are assumed to be most expensive.)
* First, group all models that share a technique to render them together.
* Within those groups, sub-group by CModelDef.
* Within those sub-groups, sub-sub-group by CTexture.
* Within those sub-sub-groups, sub-sub-sub-group by CShaderUniforms.
*
* Alpha-blended models have to be sorted by distance from camera,
* then we can batch as long as the order is preserved.
* Non-alpha-blended models can be arbitrarily reordered to maximise batching.
*
* For each model, the CShaderTechnique is derived from:
* - The current global 'context' defines
* - The CModel's material's defines
* - The CModel's material's shader effect name
*
* There are a smallish number of materials, and a smaller number of techniques.
*
* To minimise technique lookups, we first group models by material,
* in 'materialBuckets' (a hash table).
*
* For each material bucket we then look up the appropriate shader technique.
* If the technique requires sort-by-distance, the model is added to the
* 'sortByDistItems' list with its computed distance.
* Otherwise, the bucket's list of models is sorted by modeldef+texture+uniforms,
* then the technique and model list is added to 'techBuckets'.
*
* 'techBuckets' is then sorted by technique, to improve batching when multiple
* materials map onto the same technique.
*
* (Note that this isn't perfect batching: we don't sort across models in
* multiple buckets that share a technique. In practice that shouldn't reduce
* batching much (we rarely have one mesh used with multiple materials),
* and it saves on copying and lets us sort smaller lists.)
*
* Extra tech buckets are added for the sorted-by-distance models without reordering.
* Finally we render by looping over each tech bucket, then looping over the model
* list in each, rebinding the GL state whenever it changes.
*/
Allocators::DynamicArena arena(256 * KiB);
typedef ProxyAllocator<CModel*, Allocators::DynamicArena> ModelListAllocator;
typedef std::vector<CModel*, ModelListAllocator> ModelList_t;
typedef boost::unordered_map<SMRMaterialBucketKey, ModelList_t,
SMRMaterialBucketKeyHash, std::equal_to<SMRMaterialBucketKey>,
ProxyAllocator<std::pair<const SMRMaterialBucketKey, ModelList_t>, Allocators::DynamicArena>
> MaterialBuckets_t;
MaterialBuckets_t materialBuckets((MaterialBuckets_t::allocator_type(arena)));
{
PROFILE3("bucketing by material");
for (size_t i = 0; i < m->submissions[cullGroup].size(); ++i)
{
CModel* model = m->submissions[cullGroup][i];
uint32_t condFlags = 0;
const CShaderConditionalDefines& condefs = model->GetMaterial().GetConditionalDefines();
for (size_t j = 0; j < condefs.GetSize(); ++j)
{
const CShaderConditionalDefines::CondDefine& item = condefs.GetItem(j);
int type = item.m_CondType;
switch (type)
{
case DCOND_DISTANCE:
{
CVector3D modelpos = model->GetTransform().GetTranslation();
float dist = worldToCam.Transform(modelpos).Z;
float dmin = item.m_CondArgs[0];
float dmax = item.m_CondArgs[1];
if ((dmin < 0 || dist >= dmin) && (dmax < 0 || dist < dmax))
condFlags |= (1 << j);
break;
}
}
}
CShaderDefines defs = model->GetMaterial().GetShaderDefines(condFlags);
SMRMaterialBucketKey key(model->GetMaterial().GetShaderEffect(), defs);
MaterialBuckets_t::iterator it = materialBuckets.find(key);
if (it == materialBuckets.end())
{
std::pair<MaterialBuckets_t::iterator, bool> inserted = materialBuckets.insert(
std::make_pair(key, ModelList_t(ModelList_t::allocator_type(arena))));
inserted.first->second.reserve(32);
inserted.first->second.push_back(model);
}
else
{
it->second.push_back(model);
}
}
}
typedef ProxyAllocator<SMRSortByDistItem, Allocators::DynamicArena> SortByDistItemsAllocator;
std::vector<SMRSortByDistItem, SortByDistItemsAllocator> sortByDistItems((SortByDistItemsAllocator(arena)));
typedef ProxyAllocator<CShaderTechniquePtr, Allocators::DynamicArena> SortByTechItemsAllocator;
std::vector<CShaderTechniquePtr, SortByTechItemsAllocator> sortByDistTechs((SortByTechItemsAllocator(arena)));
// indexed by sortByDistItems[i].techIdx
// (which stores indexes instead of CShaderTechniquePtr directly
// to avoid the shared_ptr copy cost when sorting; maybe it'd be better
// if we just stored raw CShaderTechnique* and assumed the shader manager
// will keep it alive long enough)
typedef ProxyAllocator<SMRTechBucket, Allocators::DynamicArena> TechBucketsAllocator;
std::vector<SMRTechBucket, TechBucketsAllocator> techBuckets((TechBucketsAllocator(arena)));
{
PROFILE3("processing material buckets");
for (MaterialBuckets_t::iterator it = materialBuckets.begin(); it != materialBuckets.end(); ++it)
{
CShaderTechniquePtr tech = g_Renderer.GetShaderManager().LoadEffect(it->first.effect, context, it->first.defines);
// Skip invalid techniques (e.g. from data file errors)
if (!tech)
continue;
if (tech->GetSortByDistance())
{
// Add the tech into a vector so we can index it
// (There might be duplicates in this list, but that doesn't really matter)
if (sortByDistTechs.empty() || sortByDistTechs.back() != tech)
sortByDistTechs.push_back(tech);
size_t techIdx = sortByDistTechs.size()-1;
// Add each model into sortByDistItems
for (size_t i = 0; i < it->second.size(); ++i)
{
SMRSortByDistItem itemWithDist;
itemWithDist.techIdx = techIdx;
CModel* model = it->second[i];
itemWithDist.model = model;
CVector3D modelpos = model->GetTransform().GetTranslation();
itemWithDist.dist = worldToCam.Transform(modelpos).Z;
sortByDistItems.push_back(itemWithDist);
}
}
else
{
// Sort model list by modeldef+texture, for batching
// TODO: This only sorts by base texture. While this is an OK approximation
// for most cases (as related samplers are usually used together), it would be better
// to take all the samplers into account when sorting here.
std::sort(it->second.begin(), it->second.end(), SMRBatchModel());
// Add a tech bucket pointing at this model list
SMRTechBucket techBucket = { tech, &it->second[0], it->second.size() };
techBuckets.push_back(techBucket);
}
}
}
{
PROFILE3("sorting tech buckets");
// Sort by technique, for better batching
std::sort(techBuckets.begin(), techBuckets.end(), SMRCompareTechBucket());
}
// List of models corresponding to sortByDistItems[i].model
// (This exists primarily because techBuckets wants a CModel**;
// we could avoid the cost of copying into this list by adding
// a stride length into techBuckets and not requiring contiguous CModel*s)
std::vector<CModel*, ModelListAllocator> sortByDistModels((ModelListAllocator(arena)));
if (!sortByDistItems.empty())
{
{
PROFILE3("sorting items by dist");
std::sort(sortByDistItems.begin(), sortByDistItems.end(), SMRCompareSortByDistItem());
}
{
PROFILE3("batching dist-sorted items");
sortByDistModels.reserve(sortByDistItems.size());
// Find runs of distance-sorted models that share a technique,
// and create a new tech bucket for each run
size_t start = 0; // start of current run
size_t currentTechIdx = sortByDistItems[start].techIdx;
for (size_t end = 0; end < sortByDistItems.size(); ++end)
{
sortByDistModels.push_back(sortByDistItems[end].model);
size_t techIdx = sortByDistItems[end].techIdx;
if (techIdx != currentTechIdx)
{
// Start of a new run - push the old run into a new tech bucket
SMRTechBucket techBucket = { sortByDistTechs[currentTechIdx], &sortByDistModels[start], end-start };
techBuckets.push_back(techBucket);
start = end;
currentTechIdx = techIdx;
}
}
// Add the tech bucket for the final run
SMRTechBucket techBucket = { sortByDistTechs[currentTechIdx], &sortByDistModels[start], sortByDistItems.size()-start };
techBuckets.push_back(techBucket);
}
}
{
PROFILE3("rendering bucketed submissions");
size_t idxTechStart = 0;
// This vector keeps track of texture changes during rendering. It is kept outside the
// loops to avoid excessive reallocations. The token allocation of 64 elements
// should be plenty, though it is reallocated below (at a cost) if necessary.
typedef ProxyAllocator<CTexture*, Allocators::DynamicArena> TextureListAllocator;
std::vector<CTexture*, TextureListAllocator> currentTexs((TextureListAllocator(arena)));
currentTexs.reserve(64);
// texBindings holds the identifier bindings in the shader, which can no longer be defined
// statically in the ShaderRenderModifier class. texBindingNames uses interned strings to
// keep track of when bindings need to be reevaluated.
typedef ProxyAllocator<CShaderProgram::Binding, Allocators::DynamicArena> BindingListAllocator;
std::vector<CShaderProgram::Binding, BindingListAllocator> texBindings((BindingListAllocator(arena)));
texBindings.reserve(64);
typedef ProxyAllocator<CStrIntern, Allocators::DynamicArena> BindingNamesListAllocator;
std::vector<CStrIntern, BindingNamesListAllocator> texBindingNames((BindingNamesListAllocator(arena)));
texBindingNames.reserve(64);
while (idxTechStart < techBuckets.size())
{
CShaderTechniquePtr currentTech = techBuckets[idxTechStart].tech;
// Find runs [idxTechStart, idxTechEnd) in techBuckets of the same technique
size_t idxTechEnd;
for (idxTechEnd = idxTechStart + 1; idxTechEnd < techBuckets.size(); ++idxTechEnd)
{
if (techBuckets[idxTechEnd].tech != currentTech)
break;
}
// For each of the technique's passes, render all the models in this run
for (int pass = 0; pass < currentTech->GetNumPasses(); ++pass)
{
currentTech->BeginPass(pass);
const CShaderProgramPtr& shader = currentTech->GetShader(pass);
int streamflags = shader->GetStreamFlags();
modifier->BeginPass(shader);
m->vertexRenderer->BeginPass(streamflags);
// When the shader technique changes, textures need to be
// rebound, so ensure there are no remnants from the last pass.
// (the vector size is set to 0, but memory is not freed)
currentTexs.clear();
texBindings.clear();
texBindingNames.clear();
CModelDef* currentModeldef = NULL;
CShaderUniforms currentStaticUniforms;
for (size_t idx = idxTechStart; idx < idxTechEnd; ++idx)
{
CModel** models = techBuckets[idx].models;
size_t numModels = techBuckets[idx].numModels;
for (size_t i = 0; i < numModels; ++i)
{
CModel* model = models[i];
if (flags && !(model->GetFlags() & flags))
continue;
const CMaterial::SamplersVector& samplers = model->GetMaterial().GetSamplers();
size_t samplersNum = samplers.size();
// make sure the vectors are the right virtual sizes, and also
// reallocate if there are more samplers than expected.
if (currentTexs.size() != samplersNum)
{
currentTexs.resize(samplersNum, NULL);
texBindings.resize(samplersNum, CShaderProgram::Binding());
texBindingNames.resize(samplersNum, CStrIntern());
// ensure they are definitely empty
std::fill(texBindings.begin(), texBindings.end(), CShaderProgram::Binding());
std::fill(currentTexs.begin(), currentTexs.end(), (CTexture*)NULL);
std::fill(texBindingNames.begin(), texBindingNames.end(), CStrIntern());
}
// bind the samplers to the shader
for (size_t s = 0; s < samplersNum; ++s)
{
const CMaterial::TextureSampler& samp = samplers[s];
CShaderProgram::Binding bind = texBindings[s];
// check that the handles are current
// and reevaluate them if necessary
if (texBindingNames[s] == samp.Name && bind.Active())
{
bind = texBindings[s];
}
else
{
bind = shader->GetTextureBinding(samp.Name);
texBindings[s] = bind;
texBindingNames[s] = samp.Name;
}
// same with the actual sampler bindings
CTexture* newTex = samp.Sampler.get();
if (bind.Active() && newTex != currentTexs[s])
{
shader->BindTexture(bind, samp.Sampler->GetHandle());
currentTexs[s] = newTex;
}
}
// Bind modeldef when it changes
CModelDef* newModeldef = model->GetModelDef().get();
if (newModeldef != currentModeldef)
{
currentModeldef = newModeldef;
m->vertexRenderer->PrepareModelDef(shader, streamflags, *currentModeldef);
}
// Bind all uniforms when any change
CShaderUniforms newStaticUniforms = model->GetMaterial().GetStaticUniforms();
if (newStaticUniforms != currentStaticUniforms)
{
currentStaticUniforms = newStaticUniforms;
currentStaticUniforms.BindUniforms(shader);
}
const CShaderRenderQueries& renderQueries = model->GetMaterial().GetRenderQueries();
for (size_t q = 0; q < renderQueries.GetSize(); q++)
{
CShaderRenderQueries::RenderQuery rq = renderQueries.GetItem(q);
if (rq.first == RQUERY_TIME)
{
CShaderProgram::Binding binding = shader->GetUniformBinding(rq.second);
if (binding.Active())
{
double time = g_Renderer.GetTimeManager().GetGlobalTime();
shader->Uniform(binding, time, 0,0,0);
}
}
else if (rq.first == RQUERY_WATER_TEX)
{
WaterManager* WaterMgr = g_Renderer.GetWaterManager();
double time = WaterMgr->m_WaterTexTimer;
double period = 1.6;
int curTex = (int)(time*60/period) % 60;
if (WaterMgr->m_RenderWater && WaterMgr->WillRenderFancyWater())
shader->BindTexture(str_waterTex, WaterMgr->m_NormalMap[curTex]);
else
shader->BindTexture(str_waterTex, g_Renderer.GetTextureManager().GetErrorTexture());
}
else if (rq.first == RQUERY_SKY_CUBE)
{
shader->BindTexture(str_skyCube, g_Renderer.GetSkyManager()->GetSkyCube());
}
}
modifier->PrepareModel(shader, model);
CModelRData* rdata = static_cast<CModelRData*>(model->GetRenderData());
ENSURE(rdata->GetKey() == m->vertexRenderer.get());
m->vertexRenderer->RenderModel(shader, streamflags, model, rdata);
}
}
m->vertexRenderer->EndPass(streamflags);
currentTech->EndPass(pass);
}
idxTechStart = idxTechEnd;
}
}
}
// Render fancy water
bool TerrainRenderer::RenderFancyWater(const CShaderDefines& context, ShadowMap* shadow)
{
PROFILE3_GPU("fancy water");
WaterManager* WaterMgr = g_Renderer.GetWaterManager();
CShaderDefines defines = context;
WaterMgr->UpdateQuality();
// If we're using fancy water, make sure its shader is loaded
if (!m->fancyWaterShader || WaterMgr->m_NeedsReloading)
{
if (WaterMgr->m_WaterNormal)
defines.Add(str_USE_NORMALS, str_1);
if (WaterMgr->m_WaterRealDepth)
defines.Add(str_USE_REAL_DEPTH, str_1);
if (WaterMgr->m_WaterFoam)
defines.Add(str_USE_FOAM, str_1);
if (WaterMgr->m_WaterCoastalWaves && false)
defines.Add(str_USE_WAVES, str_1);
if (WaterMgr->m_WaterRefraction)
defines.Add(str_USE_REFRACTION, str_1);
if (WaterMgr->m_WaterReflection)
defines.Add(str_USE_REFLECTION, str_1);
if (shadow && WaterMgr->m_WaterShadows)
defines.Add(str_USE_SHADOWS, str_1);
m->wavesShader = g_Renderer.GetShaderManager().LoadProgram("glsl/waves", defines);
if (!m->wavesShader)
{
LOGERROR(L"Failed to load waves shader. Deactivating waves.\n");
g_Renderer.SetOptionBool(CRenderer::OPT_WATERCOASTALWAVES, false);
defines.Add(str_USE_WAVES, str_0);
}
// haven't updated the ARB shader yet so I'll always load the GLSL
/*if (!g_Renderer.m_Options.m_PreferGLSL && !superFancy)
m->fancyWaterShader = g_Renderer.GetShaderManager().LoadProgram("arb/water_high", defines);
else*/
m->fancyWaterShader = g_Renderer.GetShaderManager().LoadProgram("glsl/water_high", defines);
if (!m->fancyWaterShader)
{
LOGERROR(L"Failed to load water shader. Falling back to non-fancy water.\n");
WaterMgr->m_RenderWater = false;
return false;
}
WaterMgr->m_NeedsReloading = false;
}
CLOSTexture& losTexture = g_Renderer.GetScene().GetLOSTexture();
GLuint depthTex;
// creating the real depth texture using the depth buffer.
if (WaterMgr->m_WaterRealDepth)
{
if (WaterMgr->m_depthTT == 0)
{
glGenTextures(1, (GLuint*)&depthTex);
WaterMgr->m_depthTT = depthTex;
glBindTexture(GL_TEXTURE_2D, WaterMgr->m_depthTT);
#if CONFIG2_GLES
GLenum format = GL_DEPTH_COMPONENT;
#else
GLenum format = GL_DEPTH_COMPONENT32;
#endif
// TODO: use POT texture
glTexImage2D(GL_TEXTURE_2D, 0, format, g_Renderer.GetWidth(), g_Renderer.GetHeight(),
0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE,NULL);
}
glBindTexture(GL_TEXTURE_2D, WaterMgr->m_depthTT);
#if !CONFIG2_GLES
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_NONE);
#endif
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glCopyTexImage2D(GL_TEXTURE_2D,0,GL_DEPTH_COMPONENT, 0, 0, g_Renderer.GetWidth(), g_Renderer.GetHeight(), 0);
glBindTexture(GL_TEXTURE_2D, 0);
}
// Calculating the advanced informations about Foam and all if the quality calls for it.
/*if (WaterMgr->m_NeedInfoUpdate && (WaterMgr->m_WaterFoam || WaterMgr->m_WaterCoastalWaves))
{
WaterMgr->m_NeedInfoUpdate = false;
WaterMgr->CreateSuperfancyInfo();
}*/
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
double time = WaterMgr->m_WaterTexTimer;
double period = 8;
int curTex = (int)(time*60/period) % 60;
int nexTex = (curTex + 1) % 60;
GLuint FramebufferName = 0;
// rendering waves to a framebuffer
// TODO: reactivate this with something that looks good.
if (false && WaterMgr->m_WaterCoastalWaves && WaterMgr->m_VBWaves && !g_AtlasGameLoop->running)
{
// Save the post-processing framebuffer.
GLint fbo;
glGetIntegerv(GL_FRAMEBUFFER_BINDING_EXT, &fbo);
pglGenFramebuffersEXT(1, &FramebufferName);
pglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, FramebufferName);
GLuint renderedTexture;
if (WaterMgr->m_waveTT == 0)
{
glGenTextures(1, &renderedTexture);
WaterMgr->m_waveTT = renderedTexture;
glBindTexture(GL_TEXTURE_2D, WaterMgr->m_waveTT);
// TODO: use POT texture
glTexImage2D(GL_TEXTURE_2D, 0,GL_RGBA, (float)g_Renderer.GetWidth(), (float)g_Renderer.GetHeight(), 0,GL_RGBA, GL_UNSIGNED_BYTE, 0);
}
glBindTexture(GL_TEXTURE_2D, WaterMgr->m_waveTT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
pglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, WaterMgr->m_waveTT, 0);
glClearColor(0.5f,0.5f,1.0f,0.0f);
glClear(GL_COLOR_BUFFER_BIT);
// rendering
m->wavesShader->Bind();
m->wavesShader->BindTexture(str_waveTex, WaterMgr->m_Wave);
m->wavesShader->Uniform(str_time, (float)time);
m->wavesShader->Uniform(str_waviness, WaterMgr->m_Waviness);
m->wavesShader->Uniform(str_mapSize, (float)(WaterMgr->m_TexSize));
SWavesVertex *base=(SWavesVertex *)WaterMgr->m_VBWaves->m_Owner->Bind();
GLsizei stride = sizeof(SWavesVertex);
m->wavesShader->VertexPointer(3, GL_FLOAT, stride, &base[WaterMgr->m_VBWaves->m_Index].m_Position);
m->wavesShader->TexCoordPointer(GL_TEXTURE0,2,GL_BYTE, stride,&base[WaterMgr->m_VBWaves->m_Index].m_UV);
m->wavesShader->AssertPointersBound();
u8* indexBase = WaterMgr->m_VBWavesIndices->m_Owner->Bind();
glDrawElements(GL_TRIANGLES, (GLsizei) WaterMgr->m_VBWavesIndices->m_Count, GL_UNSIGNED_SHORT, indexBase + sizeof(u16)*(WaterMgr->m_VBWavesIndices->m_Index));
g_Renderer.m_Stats.m_DrawCalls++;
CVertexBuffer::Unbind();
m->wavesShader->Unbind();
// rebind post-processing frambuffer.
pglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo);
glBindTexture(GL_TEXTURE_2D, 0);
}
m->fancyWaterShader->Bind();
// Shift the texture coordinates by these amounts to make the water "flow"
float tx = -fmod(time, 81.0 / (WaterMgr->m_Waviness/20.0 + 0.8) )/(81.0/ (WaterMgr->m_Waviness/20.0 + 0.8) );
float ty = -fmod(time, 34.0 / (WaterMgr->m_Waviness/20.0 + 0.8) )/(34.0/ (WaterMgr->m_Waviness/20.0 + 0.8) );
float repeatPeriod = WaterMgr->m_RepeatPeriod;
const CCamera& camera = g_Renderer.GetViewCamera();
CVector3D camPos = camera.m_Orientation.GetTranslation();
m->fancyWaterShader->BindTexture(str_normalMap, WaterMgr->m_NormalMap[curTex]);
m->fancyWaterShader->BindTexture(str_normalMap2, WaterMgr->m_NormalMap[nexTex]);
if (WaterMgr->m_WaterFoam || WaterMgr->m_WaterCoastalWaves)
{
m->fancyWaterShader->BindTexture(str_Foam, WaterMgr->m_Foam);
m->fancyWaterShader->Uniform(str_mapSize, (float)(WaterMgr->m_TexSize));
}
if (WaterMgr->m_WaterRealDepth)
m->fancyWaterShader->BindTexture(str_depthTex, WaterMgr->m_depthTT);
if (WaterMgr->m_WaterCoastalWaves)
m->fancyWaterShader->BindTexture(str_waveTex, WaterMgr->m_waveTT);
if (WaterMgr->m_WaterReflection)
m->fancyWaterShader->BindTexture(str_reflectionMap, WaterMgr->m_ReflectionTexture);
if (WaterMgr->m_WaterRefraction)
m->fancyWaterShader->BindTexture(str_refractionMap, WaterMgr->m_RefractionTexture);
m->fancyWaterShader->BindTexture(str_losMap, losTexture.GetTextureSmooth());
const CLightEnv& lightEnv = g_Renderer.GetLightEnv();
// TODO: only bind what's really needed for that.
m->fancyWaterShader->Uniform(str_sunDir, lightEnv.GetSunDir());
m->fancyWaterShader->Uniform(str_sunColor, lightEnv.m_SunColor.X);
m->fancyWaterShader->Uniform(str_color, WaterMgr->m_WaterColor);
m->fancyWaterShader->Uniform(str_specularStrength, WaterMgr->m_SpecularStrength);
m->fancyWaterShader->Uniform(str_waviness, WaterMgr->m_Waviness);
m->fancyWaterShader->Uniform(str_murkiness, WaterMgr->m_Murkiness);
m->fancyWaterShader->Uniform(str_tint, WaterMgr->m_WaterTint);
m->fancyWaterShader->Uniform(str_reflectionTintStrength, WaterMgr->m_ReflectionTintStrength);
m->fancyWaterShader->Uniform(str_reflectionTint, WaterMgr->m_ReflectionTint);
m->fancyWaterShader->Uniform(str_translation, tx, ty);
m->fancyWaterShader->Uniform(str_repeatScale, 1.0f / repeatPeriod);
m->fancyWaterShader->Uniform(str_reflectionMatrix, WaterMgr->m_ReflectionMatrix);
m->fancyWaterShader->Uniform(str_refractionMatrix, WaterMgr->m_RefractionMatrix);
m->fancyWaterShader->Uniform(str_losMatrix, losTexture.GetTextureMatrix());
m->fancyWaterShader->Uniform(str_cameraPos, camPos);
m->fancyWaterShader->Uniform(str_fogColor, lightEnv.m_FogColor);
m->fancyWaterShader->Uniform(str_fogParams, lightEnv.m_FogFactor, lightEnv.m_FogMax, 0.f, 0.f);
m->fancyWaterShader->Uniform(str_time, (float)time);
m->fancyWaterShader->Uniform(str_screenSize, (float)g_Renderer.GetWidth(), (float)g_Renderer.GetHeight(), 0.0f, 0.0f);
m->fancyWaterShader->BindTexture(str_skyCube, g_Renderer.GetSkyManager()->GetSkyCube());
if (shadow && WaterMgr->m_WaterShadows)
{
m->fancyWaterShader->BindTexture(str_shadowTex, shadow->GetTexture());
m->fancyWaterShader->Uniform(str_shadowTransform, shadow->GetTextureMatrix());
int width = shadow->GetWidth();
int height = shadow->GetHeight();
m->fancyWaterShader->Uniform(str_shadowScale, width, height, 1.0f / width, 1.0f / height);
}
for (size_t i = 0; i < m->visiblePatches.size(); ++i)
{
CPatchRData* data = m->visiblePatches[i];
data->RenderWater(m->fancyWaterShader);
}
m->fancyWaterShader->Unbind();
pglActiveTextureARB(GL_TEXTURE0);
pglDeleteFramebuffersEXT(1, &FramebufferName);
glDisable(GL_BLEND);
return true;
}
// Build vertex buffer for water vertices over our patch
void CPatchRData::BuildWater()
{
PROFILE3("build water");
// number of vertices in each direction in each patch
ENSURE((PATCH_SIZE % water_cell_size) == 0);
if (m_VBWater)
{
g_VBMan.Release(m_VBWater);
m_VBWater = 0;
}
if (m_VBWaterIndices)
{
g_VBMan.Release(m_VBWaterIndices);
m_VBWaterIndices = 0;
}
m_WaterBounds.SetEmpty();
// We need to use this to access the water manager or we may not have the
// actual values but some compiled-in defaults
CmpPtr<ICmpWaterManager> cmpWaterManager(*m_Simulation, SYSTEM_ENTITY);
if (!cmpWaterManager)
return;
// Build data for water
std::vector<SWaterVertex> water_vertex_data;
std::vector<GLushort> water_indices;
u16 water_index_map[PATCH_SIZE+1][PATCH_SIZE+1];
memset(water_index_map, 0xFF, sizeof(water_index_map));
// TODO: This is not (yet) exported via the ICmp interface so... we stick to these values which can be compiled in defaults
WaterManager* WaterMgr = g_Renderer.GetWaterManager();
if (WaterMgr->m_NeedsFullReloading && !g_AtlasGameLoop->running)
{
WaterMgr->m_NeedsFullReloading = false;
WaterMgr->CreateSuperfancyInfo(m_Simulation);
}
CPatch* patch = m_Patch;
CTerrain* terrain = patch->m_Parent;
ssize_t mapSize = (size_t)terrain->GetVerticesPerSide();
ssize_t x1 = m_Patch->m_X*PATCH_SIZE;
ssize_t z1 = m_Patch->m_Z*PATCH_SIZE;
// build vertices, uv, and shader varying
for (ssize_t z = 0; z < PATCH_SIZE; z += water_cell_size)
{
for (ssize_t x = 0; x <= PATCH_SIZE; x += water_cell_size)
{
// Check that the edge at x is partially underwater
float startTerrainHeight[2] = { terrain->GetVertexGroundLevel(x+x1, z+z1), terrain->GetVertexGroundLevel(x+x1, z+z1 + water_cell_size) };
float startWaterHeight[2] = { cmpWaterManager->GetExactWaterLevel(x+x1, z+z1), cmpWaterManager->GetExactWaterLevel(x+x1, z+z1 + water_cell_size) };
if (startTerrainHeight[0] >= startWaterHeight[0] && startTerrainHeight[1] >= startWaterHeight[1])
continue;
// Move x back one cell (unless at start of patch), then scan rightwards
bool belowWater = true;
ssize_t stripStart;
for (stripStart = x = std::max(x-water_cell_size, (ssize_t)0); x <= PATCH_SIZE; x += water_cell_size)
{
// If this edge is not underwater, and neither is the previous edge
// (i.e. belowWater == false), then stop this strip since we've reached
// a cell that's entirely above water
float terrainHeight[2] = { terrain->GetVertexGroundLevel(x+x1, z+z1), terrain->GetVertexGroundLevel(x+x1, z+z1 + water_cell_size) };
float waterHeight[2] = { cmpWaterManager->GetExactWaterLevel(x+x1, z+z1), cmpWaterManager->GetExactWaterLevel(x+x1, z+z1 + water_cell_size) };
if (terrainHeight[0] >= waterHeight[0] && terrainHeight[1] >= waterHeight[1])
{
if (!belowWater)
break;
belowWater = false;
}
else
belowWater = true;
// Edge (x,z)-(x,z+1) is at least partially underwater, so extend the water plane strip across it
// Compute vertex data for the 2 points on the edge
for (int j = 0; j < 2; j++)
{
// Check if we already computed this vertex from an earlier strip
if (water_index_map[z+j*water_cell_size][x] != 0xFFFF)
continue;
SWaterVertex vertex;
terrain->CalcPosition(x+x1, z+z1 + j*water_cell_size, vertex.m_Position);
float depth = waterHeight[j] - vertex.m_Position.Y;
vertex.m_Position.Y = waterHeight[j];
m_WaterBounds += vertex.m_Position;
// NB: Usually this factor is view dependent, but for performance reasons
// we do not take it into account with basic non-shader based water.
// Average constant Fresnel effect for non-fancy water
float alpha = clamp(depth / WaterMgr->m_WaterFullDepth + WaterMgr->m_WaterAlphaOffset, WaterMgr->m_WaterAlphaOffset, WaterMgr->m_WaterMaxAlpha);
// Split the depth data across 24 bits, so the fancy-water shader can reconstruct
// the depth value while the simple-water can just use the precomputed alpha
float depthInt = floor(depth);
float depthFrac = depth - depthInt;
vertex.m_DepthData = SColor4ub(
u8(clamp(depthInt, 0.0f, 255.0f)),
u8(clamp(-depthInt, 0.0f, 255.0f)),
u8(clamp(depthFrac*255.0f, 0.0f, 255.0f)),
u8(clamp(alpha*255.0f, 0.0f, 255.0f)));
int tx = x+x1;
int ty = z+z1 + j*water_cell_size;
if (g_AtlasGameLoop->running)
{
// currently no foam is used so push whatever
vertex.m_WaterData = CVector4D(0.0f,0.0f,0.0f,0.0f);
}
else
{
vertex.m_WaterData = CVector4D(WaterMgr->m_WaveX[tx + ty*mapSize],
WaterMgr->m_WaveZ[tx + ty*mapSize],
WaterMgr->m_DistanceToShore[tx + ty*mapSize],
WaterMgr->m_FoamFactor[tx + ty*mapSize]);
}
water_index_map[z+j*water_cell_size][x] = water_vertex_data.size();
water_vertex_data.push_back(vertex);
}
// If this was not the first x in the strip, then add a quad
// using the computed vertex data
if (x <= stripStart)
continue;
water_indices.push_back(water_index_map[z + water_cell_size][x - water_cell_size]);
water_indices.push_back(water_index_map[z][x - water_cell_size]);
water_indices.push_back(water_index_map[z][x]);
water_indices.push_back(water_index_map[z + water_cell_size][x]);
}
}
}
// no vertex buffers if no data generated
if (water_indices.size() == 0)
return;
// allocate vertex buffer
m_VBWater = g_VBMan.Allocate(sizeof(SWaterVertex), water_vertex_data.size(), GL_STATIC_DRAW, GL_ARRAY_BUFFER);
m_VBWater->m_Owner->UpdateChunkVertices(m_VBWater, &water_vertex_data[0]);
// Construct indices buffer
m_VBWaterIndices = g_VBMan.Allocate(sizeof(GLushort), water_indices.size(), GL_STATIC_DRAW, GL_ELEMENT_ARRAY_BUFFER);
m_VBWaterIndices->m_Owner->UpdateChunkVertices(m_VBWaterIndices, &water_indices[0]);
}
